International Nurses Day in Madrid. | JUAN MEDINA

More than two thirds of Spain's 47 million people will have been vaccinated against COVID-19 by mid-August, Prime Minister Pedro Sanchez said on Thursday.

The vaccination rollout has sped up over the past weeks and Spain is due to receive 13 million doses of Pfizer vaccine next month, Sanchez told a conference in Madrid.

"We are on track for herd immunity: 33 million compatriots will be vaccinated by mid-August", he said, using the term for when most of a population is immune to an infectious disease.

A growing number of people over 60-years-old are now getting their second shot, with more than 40% already fully inoculated, and vaccination has also started for those over 50.

At least three regions - Comunidad Valenciana, Castille and Leon, and Catalonia - have said they would start vaccinating people aged 40-50 by mid-June.

Spain has reported 79,208 deaths from COVID-19 and more than 3.5 million cases since the beginning of the pandemic. But the number of cases per 100,000 people over 14 days has fallen to 174, from 523 in mid-January.

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